How Much does a 2×4 Weigh?

The weight of a 2×4 depends on it’s length and the type of wood. Typical dried pine lumber weighs about 36 pounds per cubic foot, so a one foot length of a 2×4 would be 1.5’x3.5’x12′ = 63 cubic inches x 1 cf/1728c.i x 36 = 1.31 pounds per lineal foot.